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Revelation
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Re: Boeing 777X Testing Thread - 2019

Mon Feb 18, 2019 2:48 pm

WIederling wrote:
Revelation wrote:
Not sure if that would project on to 77x in any way though.


Afaics Boeing did not change the hull shape at all.
What they changed is the height of the frame web at the height of the window belt.

( going back: was it one of the wide body tri jets that had non uniform hoop frames? )

WTF is AFAICS? EOM
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Re: Boeing 777X Testing Thread - 2019

Mon Feb 18, 2019 2:51 pm

frmrCapCadet wrote:
I understood the extra few inches in width did not come from the circle, but inside fitting and insulation. Am I rightly reading this that the frame has been redesigned? And that would be at shoulder height and for just a few feet?? Wouldn't that be a fairly easy engineering trick?

The frames we're made thinner, with the insulation, for the majority of the fusalage length. It will be shoulder/eye and foot height making the seat able to be scooted outboard. It isn't much room, but it is an improvement.

Lightsaber
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cledaybuck
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Re: Boeing 777X Testing Thread - 2019

Mon Feb 18, 2019 3:01 pm

Revelation wrote:
WIederling wrote:
Revelation wrote:
Not sure if that would project on to 77x in any way though.


Afaics Boeing did not change the hull shape at all.
What they changed is the height of the frame web at the height of the window belt.

( going back: was it one of the wide body tri jets that had non uniform hoop frames? )

WTF is AFAICS? EOM

As far as I can see?
 
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par13del
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Re: Boeing 777X Testing Thread - 2019

Mon Feb 18, 2019 3:02 pm

Is the improvement at the expense of greater interior noise?
It will be a decade or more before folks forget how quite the A380 is and make the comparison.
 
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Re: Boeing 777X Testing Thread - 2019

Mon Feb 18, 2019 4:55 pm

cledaybuck wrote:
Revelation wrote:
WIederling wrote:

Afaics Boeing did not change the hull shape at all.
What they changed is the height of the frame web at the height of the window belt.

( going back: was it one of the wide body tri jets that had non uniform hoop frames? )

WTF is AFAICS? EOM

As far as I can see?


Well, as far as I can see, the link he provided says that IMU means he misses us, which I guess explains why he is in all these threads using abbreviations.
-Dave


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Jefford717
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Re: Boeing 777X Testing Thread - 2019

Mon Feb 18, 2019 5:09 pm

par13del wrote:
Is the improvement at the expense of greater interior noise?
It will be a decade or more before folks forget how quite the A380 is and make the comparison.


No. Because the engines are positioned further from the fuselage when compared to the classic 777 which will help with noise. It also has a newer engine with lower thrust, which again will help with noise. Thirdly the plane is also more aerodynamic when compared to the 777, which again will reduce noise.

The 777x is an all around improvement from the 777 in almost every aspect. How much improvement? we have to wait and see until the plane enters service for real world comparison.
 
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Re: Boeing 777X Testing Thread - 2019

Mon Feb 18, 2019 5:22 pm

Jefford717 wrote:
par13del wrote:
Is the improvement at the expense of greater interior noise?
It will be a decade or more before folks forget how quite the A380 is and make the comparison.


No. Because the engines are positioned further from the fuselage when compared to the classic 777 which will help with noise. It also has a newer engine with lower thrust, which again will help with noise. Thirdly the plane is also more aerodynamic when compared to the 777, which again will reduce noise.

The 777x is an all around improvement from the 777 in almost every aspect. How much improvement? we have to wait and see until the plane enters service for real world comparison.

No, because better noise insulation was developed too.

Partially, the engines will have more sound absorbing material. Quite a bit has been learned from the business jet aspect. The GV (early gulfstream V) had the area buy the engines (couches) so loud, they really weren't usable. Same with the early global express. Then bombardier upped the insulation on the Globals (in particular, back by the engines) and Gulfstream had to follow with the G650. The high end business jet market now demands cabin noise under 60db. http://www.luminary.aero/blog/quiet-aircraft-cabin/


Commercial aircraft are 65-80db. They won't go higher as US OSHA laws apply and if F/As or other airline workers are exposed to over 85db, that is a HUGE lawsuit. The A380 is on the low end.

I expect the 777X to be quieter than the 77W, but not by much. I do not expect it to be as quiet as the A380. Cest la vie.

Lightsaber
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RRUltrafan
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 12:16 am

The first 777-9X for Lufthansa is coming together in the assembly line now. [http://www.airliners.de/erste-777-9x-lufthansa-gestalt/48964] ( could only find in German or Dutch)
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 12:18 am

This was also posted on twitter by lufthansa^^^ https://twitter.com/lufthansaNews/statu ... 4971953152
"Everything has an end, but, only the sausage has two" - Albert Einstein
 
exmike
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 12:34 am

lightsaber wrote:
Jefford717 wrote:
par13del wrote:

I expect the 777X to be quieter than the 77W, but not by much. I do not expect it to be as quiet as the A380. Cest la vie.

Lightsaber


I recently was in the cockpit of a 747-400 at altitude and it was so quiet you could hear a whisper from one seat to another. It was downright eerie. Had not been in one as a passenger since I was a wee lad 30+ years ago

For those of us not in the cockpit, I think it will be a long time before there is a twin engine plane that is quieter than the forward cabin upper deck of the A380. My 747 cockpit experience tells me that nothing beats absolute distance from the engines for quietness.
 
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 12:53 am

It is all about air noise and window design. Nothing to do with distance from engines. The 747 was much louder then the 777 in the cockpit.
 
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 1:09 am

Let's get back to 777x testing, please...

pabloeing wrote:
¡¡¡ more photos in boeing twitter today ¡¡¡¡......4 B777X in production now.....

https://twitter.com/BoeingAirplanes/sta ... 3491462144 is the link.
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 1:29 am

UA777FO wrote:
It is all about air noise and window design. Nothing to do with distance from engines. The 747 was much louder then the 777 in the cockpit.

Interesting, since the cabin of the 777 is one of the noisier ones. I suppose that cabin noise variables may differ from cockpit ones. That being said I'll take the "noisy" 747 cockpit over the sounds of the cabin in any plane any day.
 
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 2:03 am

The first, the N779XW LN1567 will be in which colors of Boeing? Does orange equal the 747-8 or Boeing's traditional blue?
 
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 2:17 am

EduardoL wrote:
The first, the N779XW LN1567 will be in which colors of Boeing? Does orange equal the 747-8 or Boeing's traditional blue?


All the renders have been a maroon red house livery. Don't expect that to change. Go check YouTube for early Boeing promo videos.
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 2:22 am

exmike wrote:
UA777FO wrote:
It is all about air noise and window design. Nothing to do with distance from engines. The 747 was much louder then the 777 in the cockpit.

Interesting, since the cabin of the 777 is one of the noisier ones. I suppose that cabin noise variables may differ from cockpit ones. That being said I'll take the "noisy" 747 cockpit over the sounds of the cabin in any plane any day.


Why do fans come in her to repeat their mantra of lies? Discrediting the 77X before it flies because some other version of the 777 was loud to them and their singular experience? As someone who "commutes" on a 772 between IAD and FRA, I find the plane to be quiet, definitely more so than the 744.
© 2019. All statements are my own. The use of my statements, including by journalists, YouTube vloggers like "DJ's Aviation", etc. without my written consent is strictly prohibited.
 
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 3:11 am

GEUltraFan9XGTF wrote:
EduardoL wrote:
The first, the N779XW LN1567 will be in which colors of Boeing? Does orange equal the 747-8 or Boeing's traditional blue?


All the renders have been a maroon red house livery. Don't expect that to change. Go check YouTube for early Boeing promo videos.

Boeing is switching to a standard blue house livery, similar to the one on the 787. Early renderings were the "sunrise red" but that was switched to the newer blue, which will be the rollout livery.
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 5:56 am

lightsaber wrote:

Partially, the engines will have more sound absorbing material. Quite a bit has been learned from the business jet aspect. The GV (early gulfstream V) had the area buy the engines (couches) so loud, they really weren't usable. Same with the early global express. Then bombardier upped the insulation on the Globals (in particular, back by the engines) and Gulfstream had to follow with the G650. The high end business jet market now demands cabin noise under 60db. http://www.luminary.aero/blog/quiet-aircraft-cabin/


Commercial aircraft are 65-80db. They won't go higher as US OSHA laws apply and if F/As or other airline workers are exposed to over 85db, that is a HUGE lawsuit. The A380 is on the low end.

I expect the 777X to be quieter than the 77W, but not by much. I do not expect it to be as quiet as the A380. Cest la vie.

Lightsaber

I'd like to see the noise measurement from the seat next to the engine on the old DC-9s. My ears are still ringing.
 
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 12:41 pm

BWIAirport wrote:
GEUltraFan9XGTF wrote:
EduardoL wrote:
The first, the N779XW LN1567 will be in which colors of Boeing? Does orange equal the 747-8 or Boeing's traditional blue?


All the renders have been a maroon red house livery. Don't expect that to change. Go check YouTube for early Boeing promo videos.

Boeing is switching to a standard blue house livery, similar to the one on the 787. Early renderings were the "sunrise red" but that was switched to the newer blue, which will be the rollout livery.


Which is a shame, actually. The 'sunrise red' did the 777x really good, and IMHO looks much better than the blue. Gave it a sense of uniqueness like it belonged to a different class of airplane just like on the 747-8i...
"Everything has an end, but, only the sausage has two" - Albert Einstein
 
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N14AZ
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 3:00 pm

RRUltrafan wrote:
BWIAirport wrote:
GEUltraFan9XGTF wrote:

All the renders have been a maroon red house livery. Don't expect that to change. Go check YouTube for early Boeing promo videos.

Boeing is switching to a standard blue house livery, similar to the one on the 787. Early renderings were the "sunrise red" but that was switched to the newer blue, which will be the rollout livery.


Which is a shame, actually. The 'sunrise red' did the 777x really good, and IMHO looks much better than the blue. Gave it a sense of uniqueness like it belonged to a different class of airplane just like on the 747-8i...

I agree. Let’s hope it will be the 787-blue as opposed to the 737 MAX blue, which is a little bit darker (correct me if I am wrong) .
 
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 6:31 pm

the MAX is more of a Teal isn't it?
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 6:40 pm

Here is the detail of Boeing’s new house livery: https://randy.newairplane.com/2018/07/0 ... ur-livery/

V/F
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Revelation
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 7:08 pm

VirginFlyer wrote:
Here is the detail of Boeing’s new house livery: https://randy.newairplane.com/2018/07/0 ... ur-livery/

TFA says:

At Boeing, our liveries have evolved over the years. The most recent livery first came to life nearly a decade ago when we introduced the revolutionary 787 Dreamliner. Along the way, some models took on their own “look”. That fell short in offering a common Boeing brand identifier.

With the new livery system, we unify the look by applying the same color scheme across the entire Boeing Commercial Airplanes family. We also made a few small refinements that further streamlined the design.

I think the blue color scheme they picked is best of breed and the 777X render is stunning but I did prefer having a different color scheme (red, orange, etc) per model. I think the font/styling/patterning establishes the family concept and then each color could cause the models to stand out on their own. All blue is just too homogeneous, IMHO.

Yet it's pretty clear what we're almost certainly going to see when the models roll out:

Image
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morrisond
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 7:15 pm

Zoom in on the top right picture in this Twitter post and look how small the guy is working on the wingtip compared to the wingtip on the plane in the background.

That's a big wing!

https://twitter.com/BoeingAirplanes/sta ... 3491462144
 
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 7:18 pm

It's been surprising how little information has leaked on the 777X. No rumors of overweights or anything.

Could it actually be better than expected and Boeing is sandbagging a little?

One would have to assume that Boeing can see how good the A351 is and will get when NEO'd and hopefully they are putting more effort into the base aircraft to get it's weight down/performance up.
 
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 7:43 pm

morrisond wrote:
It's been surprising how little information has leaked on the 777X. No rumors of overweights or anything.

Could it actually be better than expected and Boeing is sandbagging a little?

One would have to assume that Boeing can see how good the A351 is and will get when NEO'd and hopefully they are putting more effort into the base aircraft to get it's weight down/performance up.


With flagging 748 sales, Boeing probably wants the 777X to be its top-end anchor for decades to come. I could see them putting lots of effort into it to avoid another 787 debacle.
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ikramerica
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 7:53 pm

Swadian wrote:
morrisond wrote:
It's been surprising how little information has leaked on the 777X. No rumors of overweights or anything.

Could it actually be better than expected and Boeing is sandbagging a little?

One would have to assume that Boeing can see how good the A351 is and will get when NEO'd and hopefully they are putting more effort into the base aircraft to get it's weight down/performance up.


With flagging 748 sales, Boeing probably wants the 777X to be its top-end anchor for decades to come. I could see them putting lots of effort into it to avoid another 787 debacle.

I just can't see that being the case. Even with a new wing, it's not decades. When the 744 came out, the 747 wasn't even 20 years old. They bought 15 years with that and the back half was more freighter than passenger. When the 779 is delivered, the 777 will be 25+ years old. They are buying 10 years. Something to get them through to the 2030s where a new aircraft can be introduced.
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OldAeroGuy
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 9:58 pm

morrisond wrote:
Zoom in on the top right picture in this Twitter post and look how small the guy is working on the wingtip compared to the wingtip on the plane in the background.

That's a big wing!

https://twitter.com/BoeingAirplanes/sta ... 3491462144


The A380 wing has 70% more area but only 11.5% more span.
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ikramerica
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Re: Boeing 777X Testing Thread - 2019

Thu Feb 21, 2019 10:15 pm

A few weeks ago there was an aviationweek article that showed the interior options.

Boeing said there are 4 different ceiling options depending on needs of customers and that you can have more than one cieling in the same aircraft with fluid transitions. They say they are combining the best of the 77W and 787 interior features.

The windows are 17% larger but also higher on the beltline. Assuming that this is shift upward is part of how they could get 4 inches out of the side walls. I wonder a bit about shoulder room on the window seats, if it will be compromised for tall peolple like the A330/340 series and DC9 series.
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RRUltrafan
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Re: Boeing 777X Testing Thread - 2019

Fri Feb 22, 2019 12:43 am

What about the production line? will this be completely separate or will it share commonality with the original 777 production lines (a modified version or something)
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Re: Boeing 777X Testing Thread - 2019

Fri Feb 22, 2019 1:00 am

RRUltrafan wrote:
What about the production line? will this be completely separate or will it share commonality with the original 777 production lines (a modified version or something)


Per pictures posted in The Seattle Times, the 777X FAL will be located in Building 40-24, adjacent to the 777 FAL in Building 40-25. Building 40-24 was formerly the 767 FAL and also served as the 787 "Surge Line".
 
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Re: Boeing 777X Testing Thread - 2019

Fri Feb 22, 2019 9:06 am

RRUltrafan wrote:
What about the production line? will this be completely separate or will it share commonality with the original 777 production lines (a modified version or something)


From previous posts it looks like they've built entirely new methods of assembling the aircraft. So I don't think is much commonality for the production lines.

I believe there are no jigs for attaching the barrels together for example.
 
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Re: Boeing 777X Testing Thread - 2019

Fri Feb 22, 2019 11:54 am

ODwyerPW wrote:
the MAX is more of a Teal isn't it?

Yes, and I prefer the blue color but that is just my opinion, of course.
 
texl1649
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Re: Boeing 777X Testing Thread - 2019

Fri Feb 22, 2019 1:32 pm

OldAeroGuy wrote:
morrisond wrote:
Zoom in on the top right picture in this Twitter post and look how small the guy is working on the wingtip compared to the wingtip on the plane in the background.

That's a big wing!

https://twitter.com/BoeingAirplanes/sta ... 3491462144


The A380 wing has 70% more area but only 11.5% more span.


70% more wing area to lift maybe 10 percent more pax is a big part of the reason the whale jet is disappearing, imo.
 
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Re: Boeing 777X Testing Thread - 2019

Fri Feb 22, 2019 1:38 pm

ZaphodHarkonnen wrote:
RRUltrafan wrote:
What about the production line? will this be completely separate or will it share commonality with the original 777 production lines (a modified version or something)


From previous posts it looks like they've built entirely new methods of assembling the aircraft. So I don't think is much commonality for the production lines.

I believe there are no jigs for attaching the barrels together for example.

Yes, the buzz word is MTP for "mobile tooling platform". The tooling is mobile so it can move itself to the right location for the job. That is what is going to allow Boeing to build both 777 and 777X on the same line going forward. Whereas it's clear the days of 77W and 77L are going to end soon, the freighter is going to live on for a while so it's important to be able to build both for a while going forward. It's the same tech that was used for Airbus A320 FAL #4 ( ref: viewtopic.php?t=601611 ).
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Re: Boeing 777X Testing Thread - 2019

Fri Feb 22, 2019 1:55 pm

morrisond wrote:
It's been surprising how little information has leaked on the 777X. No rumors of overweights or anything.
Could it actually be better than expected and Boeing is sandbagging a little?.


There have been some unsubstantiated mutterings on Anet that the reduced engine thrust on the 779 is leading to a missing of performance targets
 
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SomebodyInTLS
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Re: Boeing 777X Testing Thread - 2019

Fri Feb 22, 2019 1:56 pm

FriscoHeavy wrote:
WIederling wrote:
JayinKitsap wrote:
... etc it would save up to 10% of the weight of the skin.


IMu you only get to leverage the advantages if you do a (re)design for the differing AlLi properties.


What is up with all of these ‘IMU’ comments? What does that mean?

It would be best to just write out the words.


WIederling uses quite a few not-quite-common/correct English iitialisms. I believe IMU in this case stands for It's My Understanding - when he should be using the common IMO (In My Opinion).

Edit: never mind. I see I am late to the party...
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Spetsnaz55
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Re: Boeing 777X Testing Thread - 2019

Mon Feb 25, 2019 4:04 pm

Dont think flight test 1 will have the blue livery
 
Sooner787
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Re: Boeing 777X Testing Thread - 2019

Mon Feb 25, 2019 6:18 pm

Spetsnaz55 wrote:
Dont think flight test 1 will have the blue livery


Well we'll all find out 13 March if the rumors are correct about the Rollout date :)
 
Eyad89
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Re: Boeing 777X Testing Thread - 2019

Mon Feb 25, 2019 7:45 pm

Sooner787 wrote:
Spetsnaz55 wrote:
Dont think flight test 1 will have the blue livery


Well we'll all find out 13 March if the rumors are correct about the Rollout date :)



First flight is only a couple of weeks away? Have we seen it with engines yet?
 
ikramerica
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Re: Boeing 777X Testing Thread - 2019

Mon Feb 25, 2019 7:51 pm

Eyad89 wrote:
Sooner787 wrote:
Spetsnaz55 wrote:
Dont think flight test 1 will have the blue livery


Well we'll all find out 13 March if the rumors are correct about the Rollout date :)



First flight is only a couple of weeks away? Have we seen it with engines yet?

Rollout isn't first flight. Lots of ground testing first. Taxi test, high speed taxi test, I believe the rejected takeoff test comes first (not 100% on that).
Of all the things to worry about... the Wookie has no pants.
 
Eyad89
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Re: Boeing 777X Testing Thread - 2019

Mon Feb 25, 2019 8:06 pm

ikramerica wrote:
Eyad89 wrote:
Sooner787 wrote:

Well we'll all find out 13 March if the rumors are correct about the Rollout date :)



First flight is only a couple of weeks away? Have we seen it with engines yet?

Rollout isn't first flight. Lots of ground testing first. Taxi test, high speed taxi test, I believe the rejected takeoff test comes first (not 100% on that).


Sorry, the 13th of March is the rollout date. I misread that as first flight. My bad.
 
Sooner787
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Re: Boeing 777X Testing Thread - 2019

Mon Feb 25, 2019 8:07 pm

Eyad89 wrote:
ikramerica wrote:
Eyad89 wrote:


First flight is only a couple of weeks away? Have we seen it with engines yet?

Rollout isn't first flight. Lots of ground testing first. Taxi test, high speed taxi test, I believe the rejected takeoff test comes first (not 100% on that).


Sorry, the 13th of March is the rollout date. I misread that as first flight. My bad.


No worries....... I heard first flight might be by end of April? That's only 8-9 weeks away :)
 
Eyad89
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Re: Boeing 777X Testing Thread - 2019

Mon Feb 25, 2019 8:16 pm

Sooner787 wrote:

No worries....... I heard first flight might be by end of April? That's only 8-9 weeks away :)


It is always exciting to have a first flight of a new plane. I am interested in how its wing will flex.
 
OldAeroGuy
Posts: 3793
Joined: Sun Dec 05, 2004 6:50 am

Re: Boeing 777X Testing Thread - 2019

Mon Feb 25, 2019 8:52 pm

ikramerica wrote:
Eyad89 wrote:
Sooner787 wrote:

Well we'll all find out 13 March if the rumors are correct about the Rollout date :)



First flight is only a couple of weeks away? Have we seen it with engines yet?

Rollout isn't first flight. Lots of ground testing first. Taxi test, high speed taxi test, I believe the rejected takeoff test comes first (not 100% on that).


It's a low energy RTO, not very exciting.
Airplane design is easy, the difficulty is getting them to fly - Barnes Wallis
 
Sooner787
Posts: 2391
Joined: Thu Jul 18, 2013 1:44 am

Re: Boeing 777X Testing Thread - 2019

Mon Feb 25, 2019 8:54 pm

Eyad89 wrote:
Sooner787 wrote:

No worries....... I heard first flight might be by end of April? That's only 8-9 weeks away :)


It is always exciting to have a first flight of a new plane. I am interested in how its wing will flex.


The roar from the crowds gathered to watch the first flight will let out 3 great cheers

1) when the jet leaves the ground
2) when the jet safely lands
3) when the jets taxis into position for takeoff and drops her wingtips into position. :)
 
User avatar
SEPilot
Posts: 5376
Joined: Sat Dec 30, 2006 10:21 pm

Re: Boeing 777X Testing Thread - 2019

Mon Feb 25, 2019 9:49 pm

Revelation wrote:
ZaphodHarkonnen wrote:
RRUltrafan wrote:
What about the production line? will this be completely separate or will it share commonality with the original 777 production lines (a modified version or something)


From previous posts it looks like they've built entirely new methods of assembling the aircraft. So I don't think is much commonality for the production lines.

I believe there are no jigs for attaching the barrels together for example.

Yes, the buzz word is MTP for "mobile tooling platform". The tooling is mobile so it can move itself to the right location for the job. That is what is going to allow Boeing to build both 777 and 777X on the same line going forward. Whereas it's clear the days of 77W and 77L are going to end soon, the freighter is going to live on for a while so it's important to be able to build both for a while going forward. It's the same tech that was used for Airbus A320 FAL #4 ( ref: https://www.airliners.net/forum/viewtopic.php?t=601611 ).

While at this point there has been no word on the 77F being converted to the 777X platform, I would think it would be a high priority for Boeing once the 779 and 778 are in service and production kinks worked out. Maintaining production capability for the old wing just for the F has got to be expensive.
The problem with making things foolproof is that fools are so doggone ingenious...Dan Keebler
 
JayinKitsap
Posts: 1233
Joined: Sat Nov 26, 2005 9:55 am

Re: Boeing 777X Testing Thread - 2019

Mon Feb 25, 2019 10:02 pm

Sooner787 wrote:
Eyad89 wrote:
Sooner787 wrote:

No worries....... I heard first flight might be by end of April? That's only 8-9 weeks away :)


It is always exciting to have a first flight of a new plane. I am interested in how its wing will flex.


The roar from the crowds gathered to watch the first flight will let out 3 great cheers

1) when the jet leaves the ground
2) when the jet safely lands
3) when the jets taxis into position for takeoff and drops her wingtips into position. :)


I wonder if they will 'wave' them to the crowd a few times. :blush:
 
MileHFL400
Posts: 607
Joined: Sat Dec 05, 2015 11:42 am

Re: Boeing 777X Testing Thread - 2019

Tue Feb 26, 2019 9:59 am

Would I be correct in assuming that since the B777-8 will be getting the same sized engines as the -9 and have lower cruise thrust levels than the B777-300ER and -9 the fan rotation speed would be fairly low at steady cruise?
Thanks and best Regards
AA
 
planecane
Posts: 557
Joined: Thu Feb 09, 2017 4:58 pm

Re: Boeing 777X Testing Thread - 2019

Tue Feb 26, 2019 11:29 am

Sooner787 wrote:
Eyad89 wrote:
Sooner787 wrote:

No worries....... I heard first flight might be by end of April? That's only 8-9 weeks away :)


It is always exciting to have a first flight of a new plane. I am interested in how its wing will flex.


The roar from the crowds gathered to watch the first flight will let out 3 great cheers

1) when the jet leaves the ground
2) when the jet safely lands
3) when the jets taxis into position for takeoff and drops her wingtips into position. :)


I would imagine for the first flight the wingtips will be in the flight configuration long before taxiing into position for TO.
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